2006 Fiscal Year Final Research Report Summary
Studies on coagulation and decomposition of livestock wastewater with the use of electrochemical oxidation process and magnetic activated sludge process
| Project/Area Number |
17380190
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Boundary agriculture
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| Research Institution | Obihiro University of Agriculture and Veterinary Medicine |
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Principal Investigator |
KURAMOCHI Katsuhisa Obihiro University of Agriculture and Veterinary Medicine, 畜産学部, Associate professor (00091546)
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| Co-Investigator(Kenkyū-buntansha) |
UMETSU Kazutaka Obihiro University, 大学院・畜産学研究科, Professor (20203581)
TANI Masayuki Obihiro University, 畜産学部, Associate professor (00271750)
IHARA Ikko Kobe University, 農学部, Assistant Professor (50396256)
SAKAI Yasuzo Utsunomiya University, 工学部, Associate professor (70186998)
WATANABE Tuneo Tokyo Metropolitan University, 都市教養学部, Professor (90240499)
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| Project Period (FY) |
2005 – 2006
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| Keywords | livestock wastewater / coagulation and decomposition / magnetic activated sludge process / electrochemical oxidation / dairy wastewater / COD / ammonium nitrogen / total phosphate |
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| Research Abstract |
1) Analysis of livestock wastewater in Tokachi District.
We collected 15 livestock wastewater samples in Tokachi district and performed analysis of these water samples. BOD, total nitrogen and total phosphate was 500~1500mg/L, T-N100ng/l, T-P20mg/L in the average, respectively. These results were very important information for the future investigation for livestock water control.
2) Coagulation and decomposition of livestock wastewater in the laboratory
We tried coagulation and decomposition of livestock wastewater in the laboratory with the use of the small scale of magnetic activated sludge process system. As a results, COD of the wastewater decreased about 93% by this system for 149 days continuously. This indicates that magnetic activated sludge process is very effective method for coagulation and decomposition of livestock for practical use in the field.
We also tried coagulation and decomposition of livestock wastewater in the laboratory with the use of small scale of electrochemical oxidation process systems. As a result, COD, ammonium nitrogen and total phosphate was decreased 70%, 90% and 92%, for 4hr treatment, respectively. These results also indicate that electrochemical oxidation systems are very effective methods for coagulation and decomposition for livestock wastewater.
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